The suddenly dwarfed California bikemaker responded by upping its game.

Nestled in the redwoods halfway between Santa Cruz and Silicon Valley, Zero has doubled its staff from about 60 to about 130, added VPs of quality and product development, and doubled its production capacity.

In addition to Harley and Polaris — the parent company of the Indian and Victory motorcycle lines — BMW has put an electric scooter on the market. Austrian KTM has begun selling an electric dirt bike, and Japan’s Yamaha has said it will put two electric motorcycles into production by 2016.